Trinity Amputation and Prosthesis Experience Scales A Psychometric Assessment Using Classical Test Theory and Rasch Analysis
Trinity Amputation and Prosthesis Experience Scales A Psychometric Assessment Using Classical Test Theory and Rasch Analysis
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DOI：
10.1097/phm.0b013e3181dd8cf1
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发表时间：
2010-06-01
影响因子：
3
通讯作者：
MacLachlan, M.
中科院分区：
文献类型：
--
作者：
Gallagher, Pamela;Franchignoni, F.;MacLachlan, M.
目的：使用经典测试理论和Rasch分析对下肢截肢患者的Trinity截肢和假体经验量表（TAPES）的三个主要量表进行详细的心理测量分析。设计：对498例下肢截肢患者的假肢使用者进行了回顾性研究，从过去十年中在英国和爱尔兰进行的一些研究中汇集而成，其中TAPE作为邮政调查的一部分已经完成。因子分析技术和Rasch分析进行TAPES数据。对问卷的客观性、项目与模型的拟合度、反应类别表现和内部结构效度进行了评估。类别崩溃和项目删除被认为是改善questionnaire.Results：分析建议，重组TAPES如下：（a）三个心理社会调整子量表与四点评级量表（和改写项目）;（B）活动限制规模的基础上，10个项目与原来的三点评级量表;和（c）两个满意度与假体子量表使用三点评级量表。所有的尺度和分量表表现出可接受的内部一致性和能力，以定义一个独特的层次结构的人沿着测量construct.Conclusions：本研究经验确定了一个修订版的TAPES（TAPES-R）与简化的一般结构和心理测量适合评估截肢和调整下肢假肢的复杂经验。需要进行更多的研究来确认和进一步探索其在其他样本中的测量特性，从而增加仪器的临床有效性。
Objective: To perform a detailed psychometric analysis using both classical test theory and Rasch analysis of the three main scales of the Trinity Amputation and Prosthesis Experience Scales (TAPES) in people with a lower-limb amputation.Design: A sample of 498 persons who were prosthesis users with a lower-limb amputation was retrospectively studied, pooled from a number of studies undertaken across the United Kingdom and Ireland in the past decade in which the TAPES had been completed as part of a postal survey. Both factor analysis techniques and Rasch analysis were performed on TAPES data. Dimensionality, item fit to the model, response category performance, and internal construct validity were assessed. Category collapsing and item removal were considered to improve the questionnaire.Results: The analyses suggested to restructure the TAPES as follows: (a) three psychosocial adjustment subscales with a four-point rating scale (and a reworded item); (b) an activity restriction scale based on ten items with their original three-point rating scale; and (c) two satisfaction with the prosthesis subscales using a three-point rating scale. All scales and subscales showed acceptable internal consistency and ability to define a distinct hierarchy of persons along the measured construct.Conclusions: This study empirically identified a revised version of the TAPES (TAPES-R) with a simplified general structure and psychometrically suitable for assessing the complex experience of amputation and adjustment to a lower-limb prosthesis. Additional studies are needed to confirm and further explore its measurement properties in other samples, thereby adding clinical validity to the instrument.